There are three official Gtechniq dealer in HK, you can check it out from here: Worldwide |

They are located in Kwoloon Bay, North Point and Fanling

I called 2 of them to quote the price for Crystal Serum black for my new tesla model X ( expected to be delivered in Dec or Jan), but I found that the price range varies a lot, the price difference can up to 50%. One shop quoted HK$18000 and the other shop quoted HK$11850. I would also like to know more about the average price and hope some people can share their experience.